Simultaneous removal of As, Cd, Cr, Cu, Ni and Zn from stormwater using high-efficiency industrial sorbents: Effect of pH, contact time and humic acid

Effect of humic acid on the heavy metal removal at pH 8.5 (the starting pH was 6.5) with initial heavy metal concentrations of ~ 1 mg/L, reaction time of 4 h, ionic strength of 0.01 M NaCl, and buffer of 0.003 M NaHCO3.145